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	<title>Document</title>
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		2.与其他元素共享一行
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	<span style="width: 100px;height:100px">我是一个行内元素</span>
	<span>我是一个行内元素</span>
	<span>我是一个行内元素</span>
	<span>我是一个行内元素</span>
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	<a href="">百度一下</a>
	<b>加粗标签</b>
	<i>斜体标签</i>
	<em>斜体标签</em>
	<strong>加粗标签</strong>
	<strike>删除线</strike>
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